Virtual tape drives
The Virtual Tape Drive page of the management interface presents the status of all virtual tape drives in a cluster. You can use this page to check the status of a virtual mount, mount or unmount a volume, or assign host device numbers.
Column Name | Description |
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Address | The virtual drive address takes the format vtdXXXX , where
X is a hexadecimal number. |
Mounted Volume | The VOLSER of the mounted virtual volume. |
State | The role that the drive is performing. Possible states are the following
values:
|
Time on Drive | The elapsed time that the virtual volume is mounted on the virtual tape drive.
This column is blank if no volume is mounted. |
Cache Mount Cluster | The tape volume cache (TVC) cluster that is performing the mount operation. If
a synchronous mount exists, this field displays 2 clusters. This column is blank if no volume is mounted. |
Bytes Read | Amount of data that is read from the mounted virtual volume. This value is
shown as Raw KiB (Compressed KiB) . Refer to the topic Data storage values. |
Bytes Written | Amount of data that was written to the mounted virtual volume. This value is
shown as Raw KiB (Compressed KiB) . Refer to the topic Data storage values. |
Virtual Block Position | The position of the drive on the tape surface in block number, as calculated from beginning of tape. This value is displayed in hexadecimal form. When a volume is not mounted, this value is 0x0. |
Previously Mounted Volume | The VOLSER of the virtual volume that is mounted on the drive before this one. |
Mount Type | The type of mount on the drive. This field is blank if no volume is mounted.
Possible types are the following values:
|
Host Device Number | The device identifier as defined in the attached host. The value in this field
does not affect drive operations, but if the host device number is set, then it is easier to compare
the virtual tape drives to their associated host devices. To add host device numbers:
Important: TPF and other users of the Library Set Device Command (LSDC) are not
able to permanently store Host Device Numbers. Values for the Host Device Number field are reset
when the clear parameter is submitted.
|
- Properties
- Select this action from the Actions menu to view additional information for a selected drive.
You can change the appearance of the information that is shown on the Virtual Tape
Drives page.
To... | Do this: |
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Hide or show columns on the table |
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Filter the table data | To filter by using a string of text:
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Reset the table to its default view |
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